By NBC Bay Area staff •Published May 21, 2017•Updated on May 21, 2017 at 9:38 pm

Piseth Chhay, 48, left his home Sunday to help a friend, but the father of two never made it to his friend's house. Five days later, his 2008 silver Mercedes SUV was found on Ingalls Street in San Francisco, the family said.

The vehicle has been impounded, and authorities plan to conduct DNA testing on the car.